The former US president is expected to meet French President Emmanuel Macron and his predecessor, François Hollande, on Saturday as he wraps up a five-day global tour with a speech to elite opinion-makers in Paris.

A tweet from Barack Obama drew more than two million "likes" by Monday as the former US president offered a message of tolerance following a deadly weekend clash at a white supremacist rally, AFP reported.

US President Donald Trump has appeared to acknowledge Russia's alleged effort to interfere in the 2016 US presidential election while taking advantage of a new report to criticize his predecessor Barack Obama.

US President Donald Trump's decision to reverse some Obama-era Cuba policies landed with a thud among many congressional Republicans who say the new approach surrenders a potentially lucrative market for American goods and services to competitors.

Former US president Barack Obama called on members of Congress to oppose the repeal of the Affordable Care Act (ACA), his signature health care law, in a speech Sunday night at the John F. Kennedy Library Foundation in Boston.

The results coming out of a new poll in America show that people were optimistic about change at the end of former President Barack Obama's first 100 days compared to the same period for incumbent President Donald Trump.